Measurement E151M2199

Experiment:	EG4
Year:	2016	Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_LL
ε_L:	0.9956
Q²:	0.5925 GeV²
W:	1295.0 GeV
E_beam:	2.999 GeV
ε:	0.9208

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	66.0	0.3968	0.859	0.0416
0.55	90.0	0.4595	0.8415	0.0448
0.55	270.0	0.6846	0.7946	0.058
0.65	66.0	0.8962	0.7223	0.0716
0.65	90.0	-0.0394	0.7569	0.0301
0.65	270.0	-0.147	0.8153	0.0318
0.65	282.0	0.0859	0.8239	0.0306
0.65	294.0	0.4714	0.7382	0.0455
0.65	306.0	0.3272	0.849	0.0382
0.75	78.0	-0.9496	0.6415	0.0751
0.75	90.0	-0.7298	0.7585	0.0608
0.75	102.0	-0.4872	0.8461	0.0463
0.75	258.0	1.3092	0.6004	0.0996
0.75	270.0	-0.0117	0.7979	0.03
0.75	282.0	-1.2372	0.5925	0.0946
0.75	294.0	0.3593	0.7394	0.0397
0.75	306.0	1.509	0.6391	0.1135
0.75	318.0	0.0052	0.7525	0.03
0.85	234.0	0.4732	0.8045	0.0456
0.85	258.0	1.5588	0.6689	0.1169
0.85	270.0	-0.1841	0.6209	0.0328
0.85	282.0	0.1834	0.8034	0.0328
0.85	294.0	-0.4436	0.7116	0.044
0.85	306.0	1.1744	0.6723	0.0903
0.95	90.0	1.5523	0.5759	0.1165

CLAS Physics Database